Julius kihdbbvateb



Sept. 6,1927. 1, 71

J. KINDERVATER METHOD AND APPARATUS FOR MAKING GASKETS Fi led Oct. 28. 1925 fF'IGJr INVENTbR A'H RNEY Patented Sept.

5 Fig. l is an elevatiompartly inse'ction, of

apparatus for carrylngfout myinvent1on, in;

which the apparatus is in position tobegina gasketforming operation; Fig. as. an elevation similar to Fig. 1, also partly in section,

showingthe partially formed gaslretaboutj to be out oif from the blank; 8 13 a sec tionfof'. the gasket blank after it has been cut oil; Fig. l s a: section of aco'mpl'etely formed gaslret;F-ig. is a plan, partly section, of the arbor with the shaft upon i vation of the cutter.

kets used for various-"purposes;

4 with no'waste' of material;

which it rotates; Fig. V6 is an elevation,

partly in section of the arbor with the cutter in position therein and F g. is

My invention relates to ofring gaskets aIIClQCOHlPIlSGS an mproved process and apparatus by which gaskets are. I formed and cut off from. tubular stoclrin one J operation withoutany waste. in particular my invention isadapted to the production of coppergasketsl used between the cap and sleeve of flexible staybolts, employed to stay fire box sheets, insteam-boilers,.but 1t is equally applicable to making; flat ring gas 1 In the practice of this invention,a

projection in the axis ofwhich isf'inserted a bevelled edge cutter is brought to bear the tube, to be cut and separated from the 3 remainder of the tubest'ock. The flared ring may thenbe flattened to form a regularfflat v i v F1110 gasket, thus completing the opei atmn My invention also compri be formed, preferably in the shape of a tube 2, is mounted in a hollow revolvingjspindle '3 having a shear plate a on the face thereof about the axial opening; therein. The cutter rbor .5, secured on a shaft 5 is mounted for rotation in the tool carriage 6., and may be l u and side elethe manufacture piece of" tubing of such ductility that it can be spun, is gripped in the revolving spindle of the: machine and allowed to protrude a suliicient distance to form a gasket of the desired" -width. A revolving arbor having a conical retain 'ron'iuanine sesame.

rotatable is capableof being'moved at right angles to the axis about which it rotates,

which, the carriage 6 may be mounted.

this i lOabout its axis for, the'cutterl l,which fiares' outvs' ardly to form a cutting edge 12. Extending-through.afhole '13 in the arbor 5 at right angles to its axis, is, a plug 1 45 which has inits forwarcl' face recess 15 register ing-with the inner 'endofthe seat 10 for I inner end of the cutter 11'. The recess ,15

and the inner end of the'seat 10 are threaded for reception or a threaded portion of the cutter 11, which may be screwed thereinto by plug 14 has a threaded aperture for a lock mg screw 17,, the inner end of which engages I an annular groove 18in the inner end of the cutter lh and thereby'locks the cutter l1 firmly in position in the arbor 5.

p The distance the cutting edgejlQ of the catter 11' extends forwardly from the face 9 gasketsto be; produced.

of the arbor 5 determinesqthe width of the "operationfof the inachine; the, spindle? and cutter arbor 5 are "revolvedapproximately the same axial speed. The tubular blank 2 is fed forward by any suitable feeding mechanism (not shown) into contact with the face of the arbor 5, and the arbor, while rotating, 1S moved transversely so as to bring the con shaped face of the projection 8 intoengage- :ment with the inside face of the tube 2.

This causes the end 2 of the tube2 extending beyond the plate l to be spun out in the shape of a frustum of-a cone. Further, transverse movement oftthe arbor 5 brings the cutti'ng edge 12 of thecutter 11 into coni tact with the inside of the portion 2 and severs 'itagainst'theouter face of the shear ses the various" features which I shall hereinafter describe and claim. 1

Referring to the drawingathe material to plate A from the remainder of the tube 2. The ring may then be flattened into the form shown in Fig; yor it may be applied in the bevelled shape, shown in Fig. and flattened during such application. After the arbor is shear plate t a predetermined distance into tion is then repeated.

engagement with "the arbor, and theopera Any suitableactuating mechanism may be I employed, but as rapidproduction isrdesired vancing the tube and gripping it, the tr it is preferable to have the operations of ad erse of the cutter and its return to cen al position, performed, automatically, so that they may be in proper sequence and be correctly timed with respect to each other.

The terms and expressions which I hav employed 'are used as terms of description and not of limitation, and I have no intention, in the use (it such terms and expressions, of excluding any equivalents of the features shown and described, or portions thereof, but recognize that various modifications are possible Within the scope of the i1 vention claimed.

\Vhat I claim is:

l. The process of making metallic gaskets. which comprises spinning a bevelled end on a tube; and then spearatii'ig thebevelled end from the remainder ofthetube by atrfansverse cut; thereby forming a gasket ot' a shape like a frustum of a cone.

:2. The process making metallic gaskets, which comprises spinning a bevelled end on a tube with a spinning tool and cutting oil? the bevelled end by atransverse movement of the spinning tool and then shaping the cut-oil portion to gasket form.

3. In apparatus for forming metallic gaskets from tubular stock, the combination of a hollow rotatable spindle forming holder for a tubular blank; a t'ool holder; a cutting tool mounted in the tool holder, the tool holder being rotatable and also capable of IIlOVGDlBlll) transverse to its axis of rotation,

the tool holder being adaptedfto, shape the end of the tube and the tool to sever, the end from the remainder of the tube by a transverse movement.

4. In apparatus for forming metallic gaskets from tubular stock, the combination of a hollow rotatable spindle forming a holder for a tubular blank; a rotatable tool holder having an inclined annular shoulder thereon for spinning a bevelled end on said tubular blank; and a cutting tool mounted in the tool holder adapted to engage the bevelled end and sever it by a transverse cut.

In apparatus for forming metallic gaskets from tubular stool: the combination of a. hollow rotatable spindle forini'ng a holder tor a tubular blank; a tube seating therein; a rotatable tool holder having an inclined annular shoulder thereon for spinning a bevelled end on said tubular blank; a plug seated in a transverse aperture in the holder; and a cutting tool mounted in the tool holder and extending into the plug, the cutting tool being adapted to engage the bevelledend of the blank and sever it by a transverse cut.

(3. In apparatus for forming metallic gaskets from tubularstock, the combinationol a hollow rotatable spindle forming av holder for a tubular blank; a rotatable tool holder havingan inclined annular shoulder thereon tor spinning a bevelled end on said tubular blank; a transversely extending member seated in thetool holder the member a rd tool holder having apertures entending along the axis of the tool holder; a cuttingtool securing the toolinsaid apertures.

seating in said apertures; and means for JULIUS innnnnvirrnn. 

